You have a +2 bonus to attack and damage rolls made with this magic weapon. When you throw it, it deals one extra die of damage on a hit. After you throw it and it hits or misses, it flies back to your hand immediately.
You're unwilling to part with this weapon while attuned to it. In addition, you have disadvantage on attack rolls made with weapons other than this one.
Whenever you roll a 1 on an attack roll using this weapon, your target changes to your closest ally.
If there are multiple allies, randomly determine which is the target. Make a new attack roll with advantage against your ally. If the attack hits, in addition to the standard damage you deal an extra 2d6 poison damage. Only the Remove Curse spell allows you to end attunement to this item.
This item corrupts. See the "Infernal Item Corruption" section.
If a weapon has the Thrown property, you can throw the weapon to make a ranged attack, and you can draw that weapon as part of the attack. If the weapon is a Melee weapon, use the same ability modifier for the attack and damage rolls that you use for a melee attack with that weapon.
If you hit a creature with this weapon and deal damage to it, you can reduce its Speed by 10 feet until the start of your next turn. If the creature is hit more than once by weapons that have this property, the Speed reduction doesn't exceed 10 feet.